22505542 has 4 divisors (see below), whose sum is σ = 33758316. Its totient is φ = 11252770.

The previous prime is 22505521. The next prime is 22505551. The reversal of 22505542 is 24550522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5626384 + ... + 5626387.

It is an arithmetic number, because the mean of its divisors is an integer number (8439579).

Almost surely, 2^22505542 is an apocalyptic number.

22505542 is a deficient number, since it is larger than the sum of its proper divisors (11252774).

22505542 is a wasteful number, since it uses less digits than its factorization.

22505542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11252773.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 22505542 is about 4744.0006323777. Note that the first 3 decimals coincide. The cubic root of 22505542 is about 282.3339855245. Note that the first 3 decimals are identical.

The spelling of 22505542 in words is "twenty-two million, five hundred five thousand, five hundred forty-two".